The correct answer is D. All of the above.
The Chief of Air Staff (CAS) is the most senior air officer in the Indian Air Force (IAF). The CAS is responsible for the operational and administrative control of the IAF. The CAS is assisted by the Vice-Chief of the Air Staff (VCAS), the Deputy Chief of the Air Staff (DCAS), and the Air Officer Incharge Administration (AOA).
The VCAS is the second-in-command of the IAF. The VCAS is responsible for the operational planning and execution of the IAF’s missions. The DCAS is responsible for the administrative and logistical support of the IAF. The AOA is responsible for the personnel management of the IAF.
The CAS, VCAS, DCAS, and AOA are all members of the IAF’s top management team. They are responsible for the overall planning, execution, and coordination of the IAF’s activities.